Use of SIP for the Reservation of QoS guaranteed Paths

Document Type Expired Internet-Draft (individual)
Authors Jon Crowcroft  , M Gibson 
Last updated 1999-10-20
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Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This draft defines a modification of the use of the SIP protocol to perform route reservation. These modifications are applied to two of the existing SIP Methods: INVITE and REGISTER. The modifications allow the INVITE method to be used to find the best path across a particular network based on QoS metrics. The route choice is able to be restricted at the network edge. The proposed modifications also allow the REGISTER method to be used as a means of disseminating information necessary to determine these QoS metrics. This information can be used to route INVITEs away from known areas of congestion.


Jon Crowcroft (
M Gibson (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)